Remove deprecated methods community.get_member() and get_members_from_id()
deprecated decorator
convert get_members_from_id to get_member_from_id
and implement a deprecated wrapping function for it.
This fixes the possible infinite key requesting loop we found.
Refactor _decode_member_authentication to use Dispersy.get_member_from_id()
Fix unit test for candidates.
Remove inactive() and obsolete() in candidates.
Small statistics fix
Add community version to the sort_key.
Merge pull request #216 from whirm/decode_message_fix

Decode message fix
Merge pull request #217 from LipuFei/rm-timeout-adjust

Remove _timeout_adjust
Small fixes (change category "none" to None + set obsolete walk response)
We aren't using message_type.
Change to use assertIsNone() for unit tests.
Reduced number of test_candidate tests, combination we isnt there
anymore.
Merge pull request #218 from LipuFei/rm-candidate-cleanup

Remove periodic cleanup, inactive(), and obsolete() for candidates.
Merge pull request #220 from NielsZeilemaker/fix_test_candidates

Reduced number of test_candidate tests, combination we isnt there
Merge pull request #219 from whirm/incoming_packets_refactor

Add community version when sorting/grouping
Removed inactive calls
Merge pull request #221 from NielsZeilemaker/inactive_fix

Removed inactive calls